Compound internal-combustion engine.



E. E. CHALBERG.

COMPOUND INTERNAL COMBUSTION ENGINE,

APPLICATION FILED APR. 9. 1913.

3 SHEETS-SHEET l.

guuzwtoz #ZZEC/LaZbs E. E. CHALBERG. COMPOUND INTERNAL COMBUSTION ENGINE.

APPLICATION FILED APR. 9. I'9I3.

Patented Mar. 13, 1917.

3 SHEETS-SHEET 2. v

31 UWWITOZ Ii UFE wi/lwwooeo E. E. CHALBERG. COMPOUND INTERNAL COMBUSTION ENGINE.

APP LICATION FI LED APN.9, 1913.

1 ,21 9,082. Patented Mar. 13, 1917.

3 SHEETS-SHEET 3- O) awumdo'c E217 mazzer EDWARD E. CHALIBEBG,

or GHAIPPELL, NEBRASKA, nssrenoa or ONE-HALF TO A. B.

02mm, OFCHAPPELL, NEBRASKA. l

COMPOUND INTERN All-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented Mar. 13, 1917.

' Application filed April 9, 1913. Serial No. 760,064.

To all whom it may concern:

Be it known that I, EDWARD E. CHALBERG,

a citizen of the United States, residing at Chappell, in the county of Deuel and State of Nebraska, have invented certain new and useful Improvements in Compound Internal-Combustion Engines; and I do hereby declare the followinigto be afull, clear, and

exact description 0 the invention, such as will enable others skilled in the art to which it appertainsto make and use the same.

This invention relates to new and'useful improvements in compound internal combustion engines and has for its object to provide a device which is adapted to receive the exhaust gases from an internal combustion engine cylinder and expand the same into a cylinder of larger capacity, and by this means eliminate the noise usually accompanying the exploding of gases within the cylinders of an internal combustion engine and increase the power developed.

Another object of myinvention is to provide a device which will serve as an auxiliary lowpressure engine operating in connection with the main engine. 7 p

A still further object of my invention is to provide a device which will be cheap in construction, simple in operation and effective in use.

- l/Vith the above and other objects in view I will now proceed to describemy invention in the following specification and accompanying drawings, in which Figure 1 is a side elevation of one form of my improved auxiliary motor;

Fig. 2 is a top plan view of Fig. 1;

Fig. 3 is a sectional view taken on line 33 of Fig. 1;

Fig. 4 is a diagrammatic view of a fourcylinder internal combustion engine of the usual construction, showing my auxiliary motor applied thereto;

Fig. 5 is a top plan view of a safety valve which is used in connection with my auxing the other form of iliary motor Fig. 10 is a top plan view of the auxiliary motor which I use withthe six-cylinder motor; and

Fig. 11 is an end elevation showing the arrangement of the slide valves.

Referring to the drawings by characters of reference, -1 indicates a cylinder ofmy improved auxiliary motor which is provided adjacent each end, with inlet ports 2. Slide valves 3 are located adjacent the ends of the cylinders and are adapted to be connected with an exhaust pipe 4. The inlet ports 2 are provided with couplings 5 to which are attached the' exhaust pipe 6 of each pair of cylinders of the gas engine. The slide valves 3 are preferably composed of the sl'ide7 having a port 8 adapted to register with the opening 9, which enters the cylinder and is connected withthe exhaust pipe 4.

At one end of the cylinder 1 I preferably provide guides 10 which are adapted to receive the crosshead 11, to which is attached the connecting rod 12 and the piston rod 13. The connecting rod 12 is provided at its outer extremity with-a bearing 14 which is adapted to surround'the crank shaft 15 when my device is in operation. The slides 7 of the slide valves 3 are operated by means of the eccentric 16 carrying the eccentric strap 17, which is connected to the pitnian l8 and, as will be seen'upon referring to the drawings, asv the crank shaft rOtatesthe pitlnan will cause the slide 7 of the valve 3 to reciprocate and bring the port 8 in alinement with the port 9.

Suitably mounted adjacent the ends of the cylinder 1 I provide safety valves 19, which comprise the valve seat'20, the valve 21, the stem 22 and a spider 23, which spider is provided with an aperture intermediate its ends, which is adapted to receive the valve stem 22. A coil spring 24 is adapted to coact between the spider and the i'alve 21 and cause ,the same to firmly seat'against the valve seat 20. It will he clearly seen that when the pressure inthe cylinder of the my improved auxauxiliary motor becomes too great the valve 7 21 will rise from seat 20 and allow the exconsisting of the body portion 26, the rcciprocating slides 27, and the rod 28 is pro vided, the rodbein g adaptedto be Operated is being started. This port 29 is adaptedto aline with'the port 30 in the reciprocating member 27 when the device is in use.

A four-cylinder internal combustion engine indicated generally at 31 is provided with cylinders 32, 33, 34 and 35, which in turn are provided with the usual pistons 36 I and connecting rods 37.; This engine'is provided at one end with the'usual crank 38 which carries the collars 39 between which I providea sleeve 40,130 which the rod 28 ofthe relief valve is attached. At the opposite end of the crank shaft indicated at 41 I preferablyprovide a beveled gear 42,

which is. adapted to cooperate with the bevmotor, whereby the same is put in operation. A piston 43 is provided in the cylinder 1 of 'my auxiliarymotor which is-so timed that it will move in the opposite directionto that of a piston of the gas engine.

"As clearly shown in Fig. 4, the cylinder 32 is just beginning to exhaust, the gases passing outwardly through the usual valves into'the pipe *6; As, the piston advances the gases arefojrced out through; the pipe 6 into the cylinder 1' of my auxiliary motor at a I seen that upon this samestroke cylinder 35 1 is. compressing I and cylinder 33 is firing.

When the crank shaft of. cylinder 33 reaches its lowermost extremity the exhaust port opens andithe exhaust gases pass outwardly through the pipe shown at 45, andfinto the cylinderl of my'improved auxiliary-' motorat a point indicated; at 46; By that time the piston 43- will have reached the other extremity of thecylin-der 1, 'and'a's the'ga's enters'the cylinder, at 46 the pisto1i43- will 1 start upon its returnto the original position. At the'same time that the pist'o n starts upon its return a slide valve the opposite end of saidl'piston indicat ed.at 3 opens and allows the gaseswhichwerefexpanded. on the previous operation jinto' the "opposite end of the cylinderto escape throughlthe ex- .haust pipe t. c As is fclearlydllustrated-in the drawings, the next cylinder in turn will exhaust into the end 44 of the cylinder- 10f my improved Inn-flier, 'andjth'e next cylinder in turn will exhaust intoithlend 46, this operation being continued until the motor is stopped. As the. gases are expanded into the c'ylmder, l before'they are exhauste'dto I the atmosphere, it-will be clear that they will have lost considerableof their explosive force, and by the time that they are external combustion engine. sists of cylinders 47, 48' and 49, these cyh-n .cylinder 49.'

1,219,osa

have shown a type of auxiliary motor to be used in connection with a six-cylinder in- This form conders being made similar to the cylinders of an internal combustion engine and provided 7 with the pistons 50 and the connecting rods 51. A slide valve of the construction similar to the onepreviously described is provided for each of said cylinders, as indicated at 52, and is connected to the crankshaft by meansof the eccentric rod53, which is oper ated by the, eccentric 54L keyed to the crank shaft of the auxiliary motor, This motor is preferably connected to the engine shaft by means ofaflange coupling 55. The usual eled gear 43 on 'shaftlfi of my auxiliary relief valves indicated at 56 are provided and are operated by means ofthe rocker arm '57, which is pivoted as shown at 58 and operated'by means, of the rod 28. The slide similar to the'valves previously described. The cylinders of the engine are indicated in the rotation of firing by means of the charvalves 52 are connected to the exhaust pipes acters a, b, c, d, eand f. Each pair of cyl-v inders is connected to its respective cylinder of the auxiliary motor by means of the pipes 59, 60 and 61; as is clearly illustrated in Fig. 9, the cylinder e is exhausting the gases passing through the usual exhaust valve into the loo pipe 59 and thence into the cylinder 47 of the auxiliary motor. As the piston in cylinder e passes upward the gases are forced into the enlarged cylinder 47 and against the piston 50, which upon descending allows the gas to expand into thew larger cylinder, and

therebytakes up considerable of its force.

haust pipe. The next cylinder to exhaust bethe valvfi into the exhaust pipe 60' and into the cyh through the pi e 61 into the auxiliary motor I hen, as the auxiliary motor exhausts through the slide valve 52 into the exhaust pipe,the next'cylin'derin turn, 0, W111 exhaust into the cylinder 4'1 "of the aux iliary motor, and this 0 eration will be con" .tlnued until eachcylin has fired'andlex hausted and the auxiliarymotor has taken up the excess pressure which will perform in or 48 of the auxiliary motor and a the same operation will be gone through. The following cylinder, 6, will exhaust I ing'a, the gases will pass upwardly through i the same manner as a compound steam en- I gine and thereby increase "the power for the same amount of energyused.

While in the foregoing I have shown and described the preferred embodiment of my invention, it is to be understood that I can change the arrangement and construction of the parts without in any way departing from the spirit and scope of the claim.

Having fully described my invention what I claim is:

The combination with an explosive engine including a plurality of cylinders, pistons operable within the cylinders, a crank shaft, connecting rods connecting the pistons with the crank shaft, the cylinders being provided with exhaust ports and a cranking device for cranking the engine, of a plurality of low pressure cylinders, pistonsoperable in the low pressure cylinders, a crank shaft connected to the crank shaft of the engine, v

connecting rods connecting the last mentioned crank shaft with the pistons in the low pressure cylinders, the said pistons in the low pressure cylinders being in opposed relation to the pistons in the engine cylinrelief valves on the low pressure cylinders, a

rod connecting the relief valves for simultaneously'operating the same and means connecting the rod with the cranking device whereby when said cranking device is moved into operative position with relation to the crank shaft the rod will be moved to open the relief valves.

In testimony-whereof I aflix my signature in presence of two witnesses.

EDWARD E. CHALBERG.

Witnesses:

RAY HOUGH, N. E. ZEHR.

ders, the low pressure cylinders having in- 

